Final answer:
Infants' developmental milestones and reflexes from birth to 4-6 months old in Biology.
Step-by-step explanation:
The subject of this question is Biology, specifically the developmental milestones and reflexes in infants from birth to 4-6 months old.
During the first few months after birth, infants develop various physical and cognitive abilities. At around 4-6 months, they acquire the grasp reflex, which allows them to hold objects tightly. This reflex is present from birth and gradually strengthens as the infant grows.
By the end of the fourth month, infants can roll, sit with support, and hold their head steady for short periods. By six months, they can pick up objects and transfer them between hands. Furthermore, they start to show anxiety towards strangers. By ten months, infants can wiggle, crawl, sit unsupported, and demonstrate a pincer grasp. By twelve months, they can stand with support, cooperate with dressing, wave goodbye, and understand simple commands.
These developmental milestones are essential for assessing an infant's growth and neurological development. They provide insight into the progression of motor skills, cognitive abilities, and social interactions during early childhood.